GLenum type = get_gl_type(get_component_type(storage_fmt));
if(ARB_direct_state_access)
glTextureSubImage3D(id, level, x, y, get_face_index(face), wd, ht, 1, comp, type, data);
GLenum type = get_gl_type(get_component_type(storage_fmt));
if(ARB_direct_state_access)
glTextureSubImage3D(id, level, x, y, get_face_index(face), wd, ht, 1, comp, type, data);